<template>
    <div class="home" style ="padding: 10px">
  <!-- 按钮-->
  <!-- 搜索-->
      <div style="margin: 10px 0;">
        <el-form inline="true" size="small">
          <el-form-item label="读者编号" >
        <el-input v-model="search1" placeholder="请输入读者编号"  clearable>
          <template #prefix><el-icon class="el-input__icon"><search/></el-icon></template>
        </el-input>
            </el-form-item >
          <el-form-item label="姓名" >
            <el-input v-model="search2" placeholder="请输入姓名"  clearable>
              <template #prefix><el-icon class="el-input__icon"><search /></el-icon></template>
            </el-input>
          </el-form-item >
          <el-form-item label="电话号码" >
            <el-input v-model="search3" placeholder="请输入电话号码"  clearable>
              <template #prefix><el-icon class="el-input__icon"><search /></el-icon></template>
            </el-input>
          </el-form-item >
          <el-form-item label="地址" >
            <el-input v-model="search4" placeholder="请输入地址"  clearable>
              <template #prefix><el-icon class="el-input__icon"><search /></el-icon></template>
            </el-input>
          </el-form-item >
          <el-form-item>
        <el-button type="primary" style="margin-left: 1%" @click="load" size="mini">查询</el-button>
          </el-form-item>
          <el-form-item>
            <el-button size="mini"  type="danger" @click="clear">重置</el-button>
          </el-form-item>
        </el-form>
      </div>
      <!-- 按钮-->
      <div style="margin: 10px 0;" >
        <el-popconfirm title="确认删除?" @confirm="deleteBatch" v-if="user.role == 1">
          <template #reference>
            <el-button type="danger" size="mini" >批量删除</el-button>
          </template>
        </el-popconfirm>
      </div>
  <!-- 数据字段-->
      <el-table :data="tableData" stripe border="true"  @selection-change="handleSelectionChange" >
        <el-table-column v-if="user.role ==1 "
                         type="selection"
                         width="55">
        </el-table-column>
        <el-table-column prop="id" label="读者编号" sortable />
        <el-table-column prop="username" label="用户名" />
        <el-table-column prop="nickName" label="姓名" />
        <el-table-column prop="phone" label="电话号码" />
        <el-table-column prop="sex" label="性别" />
        <el-table-column prop="address" label="地址" />
        <el-table-column fixed="right" label="操作" >
          <template v-slot="scope">
            <el-button  size="mini" @click ="handleEdit(scope.row)">编辑</el-button>
            <el-popconfirm title="确认删除?" @confirm="handleDelete(scope.row.id)">
              <template #reference>
                <el-button type="danger" size="mini" >删除</el-button>
              </template>
            </el-popconfirm>
          </template>
        </el-table-column>
      </el-table>
  <!--    分页-->
      <div style="margin: 10px 0">
        <el-pagination
            v-model:currentPage="currentPage"
            :page-sizes="[5, 10, 20]"
            :page-size="pageSize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total"
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
        >
        </el-pagination>
  
        <el-dialog v-model="dialogVisible" title="编辑读者信息" width="30%">
          <el-form :model="form" label-width="120px">
            <el-form-item label="用户名">
              <el-input style="width: 80%" v-model="form.username"></el-input>
            </el-form-item>
            <el-form-item label="昵称">
              <el-input style="width: 80%" v-model="form.nickName"></el-input>
            </el-form-item>
            <el-form-item label="电话号码">
              <el-input style="width: 80%" v-model="form.phone"></el-input>
            </el-form-item>
            <el-form-item label="性别">
              <div>
                <el-radio v-model="form.sex" label="男">男</el-radio>
                <el-radio v-model="form.sex" label="女">女</el-radio>
              </div>
            </el-form-item>
            <el-form-item label="地址">
              <el-input type="textarea" style="width: 80%" v-model="form.address"></el-input>
            </el-form-item>
          </el-form>
          <template #footer>
        <span class="dialog-footer">
          <el-button @click="dialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="save">确 定</el-button>
        </span>
          </template>
        </el-dialog>
      </div>
    </div>
  </template>
  
  <script>
  // @ is an alias to /src
  import request from "../utils/request";
  import {ElMessage} from "element-plus";
  
  export default {
    created(){
      this.load()
      let userStr = sessionStorage.getItem("user") ||"{}"
      this.user = JSON.parse(userStr)
    },
    name: 'User',
    methods: {
      handleSelectionChange(val){
        this.ids = val.map(v => v.id)
      },
      deleteBatch(){
        if (!this.ids.length) {
          ElMessage.warning("请选择数据！")
          return
        }
        //  一个小优化，直接发送这个数组，而不是一个一个的提交删除
        request.post("/user/deleteBatch",this.ids).then(res =>{
          if(res.code === '0'){
            ElMessage.success("批量删除成功")
            this.load()
          }
          else {
            ElMessage.error(res.msg)
          }
        })
      },
      load(){
        request.get("user/usersearch",{
          params:{
            pageNum: this.currentPage,
            pageSize: this.pageSize,
            search1: this.search1,
            search2: this.search2,
            search3: this.search3,
            search4: this.search4,
          }
        }).then(res =>{
          console.log(res)
          this.tableData = res.data.records
          this.total = res.data.total
        })
      },
      /**
       * 清空搜索字段并重新加载数据
       */
      clear(){
        this.search1 = ""
        this.search2 = ""
        this.search3 = ""
        this.load()
      },
  
      handleDelete(id){
        request.delete("user/" + id ).then(res =>{
          console.log(res)
          if(res.code == 0 ){
            ElMessage.success("删除成功")
          }
          else
            ElMessage.error(res.msg)
          this.load()
        })
      },
  
  
      add(){
        this.dialogVisible= true
        this.form ={}
      },
      save(){
        if(this.form.id){
          request.put("/user",this.form).then(res =>{
            console.log(res)
            if(res.code == 0){
              ElMessage({
                message: '更新成功',
                type: 'success',
              })
            }
            else {
              ElMessage.error(res.msg)
            }
  
            this.load() //不知道为啥，更新必须要放在这里面
            this.dialogVisible = false
          })
        }
        else {
          request.post("/user",this.form).then(res =>{
            console.log(res)
            if(res.code == 0){
              ElMessage.success('添加成功')
            }
            else {
              ElMessage.error(res.msg)
            }
            this.load()
            this.dialogVisible = false
          })
        }
  
      },
  
  
      handleEdit(row){
        this.form = JSON.parse(JSON.stringify(row))
        this.dialogVisible = true
      },
      handleSizeChange(pageSize){
        this.pageSize = pageSize
        this.load()
      },
      handleCurrentChange(pageNum){
        this.pageNum = pageNum
        this.load()
      },
    },
    data() {
      return {
        form: {},
        dialogVisible : false,
        search1:'',
        search2:'',
        search3:'',
        search4:'',
        total:10,
        currentPage:1,
        pageSize: 10,
        tableData: [
  
        ],
        user:{},
        ids:[],
      }
    },
  }
  </script>
  